#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.ComponentModel.Composition;
using System.Diagnostics;
using System.IO;

using Ionic.Zip;
using octalforty.Componento.ComponentModel.Tracing;
using octalforty.Componento.Shared.SemanticModel;

namespace octalforty.Componento.ComponentModel.Installation
{
    [ResourceInstaller(Priority = 100)]
    public class ZipFileResourceInstaller : IResourceInstaller
    {
        #region Public Properties
        public ITrace Trace
        { get; set; }

        public ITraceManagerService TraceManager
        { get; set; }

        [Import()]
        public IPathBuilderService PathBuilder 
        { get; set; }
        #endregion

        /// <summary>
        /// Initializes a new instance of the <see cref="ZipFileResourceInstaller"/>.
        /// </summary>
        /// <param name="traceManager"></param>
        [ImportingConstructor()]
        public ZipFileResourceInstaller(ITraceManagerService traceManager)
        {
            TraceManager = traceManager;
            Trace = TraceManager.GetTrace(GetType().Name);
        }

        #region IResourceInstaller Members
        public bool CanInstallResourceFrom(Uri resourceUri)
        {
            return Path.GetExtension(resourceUri.LocalPath).ToLowerInvariant() == ".zip";
        }

        public void InstallResource(Uri resourceUri, string destinationPathRoot, PathMapping pathMapping)
        {
            using(var zipFile = new ZipFile(resourceUri.LocalPath))
            {
                if(pathMapping == null)
                {
                    #region Tracing
                    Trace.Verbose("Extracting all files to '{0}'", destinationPathRoot);
                    #endregion

                    zipFile.ExtractAll(destinationPathRoot, ExtractExistingFileAction.OverwriteSilently);
                } // f
                else
                {
                    foreach(var zipEntry in zipFile.Entries)
                    {
                        foreach(var mappingTarget in pathMapping)
                        {
                            var sub = pathMapping[mappingTarget].Substring(2);

                            var zipFileName = zipEntry.FileName.ToLowerInvariant();
                            if(!zipEntry.IsDirectory && (sub.Length == 0 || (zipFileName.StartsWith(sub.ToLowerInvariant()) && zipFileName.Length > sub.Length)))
                            {
                                string dest = PathBuilder.BuildPath(destinationPathRoot, mappingTarget);
                                string sfp = zipEntry.FileName.Substring((sub.Length == 0 ? -1 : sub.Length) + 1);

                                #region Tracing
                                Trace.Verbose("Extracting '{0}' to '{1}'", sfp, dest);
                                #endregion

                                string fullPath = Path.Combine(dest, sfp);

                                string dir = Path.GetDirectoryName(fullPath);

                                if(!Directory.Exists(dir))
                                    Directory.CreateDirectory(dir);

                                using(FileStream fs = File.Open(fullPath, FileMode.Create))
                                    zipEntry.Extract(fs);
                            } // if
                        } // foreach
                    } // foreach
                } // else
            } // using
        }
        #endregion
    }
}